EP1668462A4 - A fast codebook selection method in audio encoding - Google Patents

A fast codebook selection method in audio encoding

Info

Publication number
EP1668462A4
EP1668462A4 EP04785029A EP04785029A EP1668462A4 EP 1668462 A4 EP1668462 A4 EP 1668462A4 EP 04785029 A EP04785029 A EP 04785029A EP 04785029 A EP04785029 A EP 04785029A EP 1668462 A4 EP1668462 A4 EP 1668462A4
Authority
EP
European Patent Office
Prior art keywords
selection method
audio encoding
codebook selection
fast codebook
fast
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04785029A
Other languages
German (de)
French (fr)
Other versions
EP1668462A2 (en
Inventor
Jeongnam Youn
S Dwarakanath
Auyeung Cheung
Takao Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Electronics Inc
Original Assignee
Sony Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Electronics Inc filed Critical Sony Electronics Inc
Publication of EP1668462A2 publication Critical patent/EP1668462A2/en
Publication of EP1668462A4 publication Critical patent/EP1668462A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/42—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L2019/0001—Codebooks
    • G10L2019/0013—Codebook search algorithms

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
EP04785029A 2003-09-29 2004-09-24 A fast codebook selection method in audio encoding Withdrawn EP1668462A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/674,980 US7426462B2 (en) 2003-09-29 2003-09-29 Fast codebook selection method in audio encoding
PCT/US2004/031471 WO2005033860A2 (en) 2003-09-29 2004-09-24 A fast codebook selection method in audio encoding

Publications (2)

Publication Number Publication Date
EP1668462A2 EP1668462A2 (en) 2006-06-14
EP1668462A4 true EP1668462A4 (en) 2008-05-14

Family

ID=34393517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04785029A Withdrawn EP1668462A4 (en) 2003-09-29 2004-09-24 A fast codebook selection method in audio encoding

Country Status (5)

Country Link
US (1) US7426462B2 (en)
EP (1) EP1668462A4 (en)
JP (1) JP2007510170A (en)
KR (1) KR20060084440A (en)
WO (1) WO2005033860A2 (en)

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US7788106B2 (en) * 2005-04-13 2010-08-31 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Entropy coding with compact codebooks
US20060235683A1 (en) * 2005-04-13 2006-10-19 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Lossless encoding of information with guaranteed maximum bitrate
US7991610B2 (en) * 2005-04-13 2011-08-02 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Adaptive grouping of parameters for enhanced coding efficiency
JP4775026B2 (en) * 2006-02-20 2011-09-21 沖電気工業株式会社 Code book selection method and code book selection device
US8515767B2 (en) * 2007-11-04 2013-08-20 Qualcomm Incorporated Technique for encoding/decoding of codebook indices for quantized MDCT spectrum in scalable speech and audio codecs
US8548816B1 (en) * 2008-12-01 2013-10-01 Marvell International Ltd. Efficient scalefactor estimation in advanced audio coding and MP3 encoder
KR20100136890A (en) 2009-06-19 2010-12-29 삼성전자주식회사 Apparatus and method for arithmetic encoding and arithmetic decoding based context
WO2011126759A1 (en) * 2010-04-09 2011-10-13 Sony Corporation Optimal separable adaptive loop filter
CN103051341B (en) * 2012-12-31 2016-01-27 华为技术有限公司 Data coding device and method, data deciphering device and method

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US6542863B1 (en) * 2000-06-14 2003-04-01 Intervideo, Inc. Fast codebook search method for MPEG audio encoding

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EP1047198A2 (en) * 1999-04-20 2000-10-25 Matsushita Electric Industrial Co., Ltd. Encoder with optimally selected codebook
US6542863B1 (en) * 2000-06-14 2003-04-01 Intervideo, Inc. Fast codebook search method for MPEG audio encoding

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Also Published As

Publication number Publication date
WO2005033860A3 (en) 2006-09-14
JP2007510170A (en) 2007-04-19
US20050075888A1 (en) 2005-04-07
US7426462B2 (en) 2008-09-16
EP1668462A2 (en) 2006-06-14
WO2005033860A2 (en) 2005-04-14
KR20060084440A (en) 2006-07-24

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Inventor name: YAMAZAKI, TAKAO

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